The principle aspects and constraints of the dynamics and kinetics of zeolite nucleation in hydrogel systems are analyzed on the basis of a model Na-rich aluminosilicate system. A detailed time-series EMT-type zeolite crystallization study in the model hydrogel system was performed to elucidate the topological and temporal aspects of zeolite nucleation. A comprehensive set of analytical tools a...

Low silica type X (LSX) Zeolite is one of useful material in many manufacturing due to the advantage properties including high surface area, stability, microporous crystalline aluminosilicates and positive ion in an extra–framework. The LSX was used rice husk silica source which obtained by leaching with hydrochloric acid and calcination at 500 C. To improve the synthesis method, the LSX was cr...

Zeolite Y, as a solid acid catalyst with excellent performance, is landmark in petroleum refining and chemical industry production–especially catalytic cracking reactions. Improving the SAR of Y zeolite, enriching its pore structure, modifying it heteroatoms can realize multifunctional catalysis improve application value it, then meet demands refining. In this review, synthesis zeolites high SA...

Zeolites are promising materials in the field of gas sensors. In this technology-oriented paper, a planar setup for potentiometric hydrocarbon and hydrogen gas sensors using zeolites as ionic sodium conductors is presented, in which the Pt-loaded Na-ZSM-5 zeolite is applied using a thick-film technique between two interdigitated gold electrodes and one of them is selectively covered for the fir...

The effective utili zation of industri all y waste cinder for electroanaly tical applicati ons by trapping the hexacyanometa llate (HCF) units from Fe~+, Ni+. Co~+. etc into the interlayer ga lleries of cinder has been reported. Prussian blue (PB) is an Fe( III )HCF wi th mixed va lence and zeolite type properties. In the present investigati on, the interca lation property of TI+ wi th PB/ci nd...

Clathrate hydrates are emerging as a novel storage medium for safe and compact methane storage. However, their industrial-scale applicability is hindered by relatively lower gas uptake sluggish formation kinetics. In this study, we have employed zeolites with acidic (H–Y, FAU-type) basic (Na–X, surface properties kinetic hydrate promoters (KHPs). The impact of physical parameters pressure the g...

The synthesis of calcium silicate supported zeolite membrane was carried out by second growth method. The chemical nature of the functionalizing agent on the formation of homogenous zeolite membrane was evaluated. One monomer and two cationic polymers were used: 3-aminopropyltriethoxysilane (APS), polyethylenimine (PEI) and polydiallyldimethylammonium chloride (PDDA). The support was subjected ...

Zeolite is a crystalline alumino-silicate microporous material, which has been widely used as ion-exchangers, adsorbent and catalyst.
 Recently, several researches highlights the progress of zeolite-based catalysts in CO2 conversion to valuable products.
 In present work, hydrothermal synthesis mordenite zeolite crystals, with composition chemical products Al2O3, 12.5 SiO2,2.4 NaOH, 1...

Iron-substituted MFI, Y and USY zeolites prepared by two preparation routes-classical ion exchange and the ultrasound modified ion-exchange method-were characterised by micro-Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet (UV)/visible diffuse reflectance spectroscopy (UV/Vis DRS). Ultrasound irradiation, a new technique for the preparation of th...

A continuous microwave equipment (CME) has been successfully developed in order to achieve an extremely rapid and mass production for ZSM-5 and NaY zeolite. A precursor mixture for synthesis of ZSM-5 was prepared by mixing aluminosilicate gel with a nanoseed solution obtained under microwave irradiation, and pumped continuously into the CME. Duration time in the CME was 5 min to accomplish the ...